Wind turbine



FIG. 1 is a front view of the wind turbine;

FIG. 2 is a left side view of the wind turbine;

FIG. 3 is a rear view of the wind turbine;

FIG. 4 is a right side view the wind turbine;

FIG. 5 is a top view of the wind turbine;

FIG. 6 is a bottom view of the wind turbine;

FIG. 7 is a top front left perspective view of the wind turbine; and,

FIG. 8 is a top rear left perspective view of the wind turbine.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

The ornamental design for a wind turbine, as shown and described. 